where am i now

... relative orientation i can be computed from i = i- 1 + i (1.6) and the relative position of the centerpoint is xi = xi-1 + Ui cos i yi = yi-1 + Ui sin i where xi, yi = relative position of ... a military perspective, the use of existing-inventory equipment of this type simplifies some of the logistics problems associated with vehicle maintenance In addition, reliability of the drive ... axis is oriented in a north-south direction, it is insensitive to the earth's rotation, and no tilting occurs From this it follows that if tilting is observed, the spin axis is no longer aligned...

Ngày tải lên: 13/02/2014, 09:20

... a military perspective, the use of existing-inventory equipment of this type simplifies some of the logistics problems associated with vehicle maintenance In addition, reliability of the drive ... axis is oriented in a north-south direction, it is insensitive to the earth's rotation, and no tilting occurs From this it follows that if tilting is observed, the spin axis is no longer aligned ... circular ring, known as the inner gimbal ring; this inner gimbal ring pivots on a second set of bearings that attach it to the outer gimbal ring This pivoting action of the inner gimbal defines...

Ngày tải lên: 10/08/2014, 02:21

... Hitachi Cable Ltd (Courtesy of Hitachi Cable America, Inc [HITACHI].) 2.4 Geomagnetic Sensors Vehicle heading is the most significant of the navigation parameters (x, y, and ) in terms of its ... make it well suited for use as a geomagnetic sensor: 1) high sensitivity, 2) directionality, and, in the case of AMR sensors, 3) the characteristic “flipping” action associated with the direction ... to shock and vibration, insensitivity to gravity effects, quick start-up, and good sensitivity in terms of bias drift rate and the random walk coefficient Coil geometry is not critical, and no...

Ngày tải lên: 10/08/2014, 02:21

... exhibited similar static position error performance The static navigation mode results did not differentiate the sensitivity of the various receivers significantly The Magellan unit navigated in ... receivers obtained a first fix under one minute, which verifies the time to first-fix specifications stated by the manufacturers The dynamic tests were used to differentiate receiver sensitivity ... for analysis Data manipulations included obtaining the position error from a surveyed location, generating histograms of position error and navigation mode, and plotting dynamic position data...

Ngày tải lên: 10/08/2014, 02:21

... typical scan image created with the Autosense II is shown in Figure 4.15 A third-generation AutoSense III is now under development for an application in Canada that requires 3-dimensional vehicle ... provided for returned signal Response time s amplitude, ambient light, and temperature to facilitate Diameter 7.6 cm dynamic calibration for optimal accuracy in demanding in applications The range output ... resulting in precise distance measurement to multiple targets in a scene illuminated by a single laser pulse The design configuration is relatively simple and comparable in size and weight to traditional...

Ngày tải lên: 10/08/2014, 02:21

... final orientation error  is not considered explicitly in the expression for E max,syst This 136 Part II Systems and Methods for Mobile Robot Positioning is because all systematic orientation ... showed higher susceptibility to non-systematic errors In real applications it is imperative that the largest possible disturbance be determined and used in testing For example, the estimated standard ... provides better odometric accuracy than differential-drive vehicles This is especially true when traveling over floor irregularities: arbitrary irregularities will affect only one wheel at a time...

Ngày tải lên: 10/08/2014, 02:21

... motion information is needed for positioning One important advantage of inertial navigation is its ability to provide fast, low-latency dynamic measurements Furthermore, inertial navigation sensors ... the reliability of position estimates (the probability that the robot stays within the ellipses at each estimated position is 90 percent in this simulation) Figure 5.15: Computer simulation of ... transmitter divided by a double-sided mirror ar- Docking B ranged along the optical axis and a beacon controller Optical axis pair of lenses Positive zone identificaOptical beacon tion is initiated...

Ngày tải lên: 10/08/2014, 02:21

... in making this decision is feature visibility Based on internal models for different features, the robot's decisions are aided by a routine check on visibility For example, the visibility of ... computer-aided design tool Schiele and Crowley propose that two representations be used in environment modeling with sonars: parametric primitives and an occupancy grid Parametric primitives describe ... efficiently The sensing modalities used significantly affect the map making strategy Error and uncertainty analyses play an important role in accurate position estimation and map building It is...

Ngày tải lên: 10/08/2014, 02:21

... method In this chapter, we review vision-based positioning methods which have not been explained in the previous chapters In a wider sense, “positioning” means finding position and orientation of ... vertical edges provide point features and two-dimensional positioning requires identification of three unique features If the features are uniquely identifiable and their positions are known, ... Mobile Robot Positioning In the second case, in which k vertical edges are indistinguishable from each other, the location algorithm finds all the solutions by investigating all the possibilities...

Ngày tải lên: 10/08/2014, 02:21

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Ngày tải lên: 10/08/2014, 02:21

... Evidence Accumulation in the PSEIKI System and Experiments in Model-driven Mobile Robot Navigation.” in Uncertainty in Artificial Intelligence, Vol 5, Elsevier Science Publishers B V., North-Holland, ... A Guide to the Next Utility, No 16778, Trimble Navigation, Sunnyvale, CA, Nov 155 Institute of Navigation 1992 Class notes from "Introduction to GPS/INS Integration," Institute of Navigation ... Proc IEEE Workshop on Intelligent Robots and Systems, IROS '90, pp 159-166 266 Talluri, R and Aggarwal, J.K., 1991, “Position Estimation of a Mobile Robot Using Edge Visibility Regions.” Proc IEEE...

Ngày tải lên: 10/08/2014, 02:21

... rotating/nodding lidar Vision-based landmark detection Duration: 4:28 minutes 360x240 The University of Michigan: Multi-Degree-of-Freedom vehicle with compliant linkage Duration: 3:15 minutes The University ... of Michigan: Internal Odometry Error Correction with the CLAPPER Duration: 4:24 minutes 240x180 240x180 360x240 Spatial Positioning Systems: Odyssey laser beacon positioning system Duration: ... minutes 240x180 360x240 Windsor Industries and Denning Branch International Robotics: RoboScrub Learn about video Duration: 2:00 minutes 240x180 360x240 360x240 MTI: CONAC laser beacon positioning...

Ngày tải lên: 10/08/2014, 02:21

... Computerized Travel Aid for the Blind." Proceedings of the 1994 IEEE International Conference on Robotics and Automation, San Diego, CA, May 8-13, 1994, pp 20232029 Paper 53 Borenstein, J, 1994g, "Internal ... 1994, "UMBmark — A Method for Measuring, Comparing, and Correcting Dead-reckoning Errors in Mobile Robots." Technical Report, The University of Michigan UM-MEAM -94-22, December 1994 ... Monterey, California, February 5-10, 1995 Paper 59 Borenstein, J and Feng L., 1995b, "Correction of Systematic Dead-reckoning Errors in Mobile Robots." Proceedings of the 1995 International Conference...

Ngày tải lên: 10/08/2014, 02:21

Ngày tải lên: 25/08/2016, 21:44

... book, read books to children, study, read a book, use the computer Where: at the post office Who: a man, some people What: mail a letter, wait in line, talk Where: at the post office Who: a man, some ... man, some people What: mail a letter, wait in line, talk Where: at the park Who: two people, a woman, some people, children What: run, ride a bike, walk, walk the dog, play Where: at the park Who: ... a family, the father, a man, a woman What: shop, push a shopping cart, clean the floor, check out Where: at the bank Who: a man, a woman, some people What: make a deposit, wait in line, write...

Ngày tải lên: 28/08/2016, 21:58

... under'standing( thông cảm) adj+ness : 'bitter ( đắng)=> 'bitterness( n i cay đắng) Các từ có trọng âm nằm âm tiết cu i từ có tận : -ee, -eer,ese,- ain, -aire,-ique,-esque Ex: de'gree, engi'neer, chi'nese, ... ngư i ăn xin) V+al : ap'prove( chấp thuận) => ap'proval(sự chấp thuận) V+y : de'liver( giao hàng)=> de'livery( giao hàng) V+age: pack( đóng g i ) => package( bưu kiện) V+ing : under'stand( thiểu) ... V+ance: re'sist( chống cự ) =>re'sistance ( chống cự ) V+er : em'ploy(thuê làm) => em'ployer( chủ lao động) V+or : in'vent ( phát minh) => in'ventor (ngư i phát minh) V+ar : beg (van xin) => 'beggar(...

Ngày tải lên: 25/06/2013, 01:26

... tiếng Việt: - Am I handsome? - Yes, you are - Are you sick? - No, I am not - Am I a pilot? - No, you are not - Are you a worker? - Yes, I am - Am I fit? - Yes, you are - Are you nice? - No, I ... am not - Am I a director? - No, you are not - Are you a driver? - Yes, I am - Am I a secretary? - Yes, you are - Are you a cleaner? - No, I am not Bước 5: Dịch sang tiếng Anh - Tớ có ph i giám ... I am - Am I a ? - , you are - Are you a ? - , I am not - Am I a ? - , you are not - Are you a ? - , I am - Am I a ? - , you are - Are you a ? - , I am not...

Ngày tải lên: 21/01/2014, 15:20

... rapid expansion of mystical, spiritual, religious 47 visions and, political ideologies around the world in the past) Identical imaginations and ideas arise in many minds simultaneously Ideologies ... things Real success and prosperity in life lies in remaining ever conscious of one's true identity When man identifies himself with ATMA (Soul), his aspirations and inclinations naturally begin ... or in heavens beyond At times such individuals use religiosity as a facade for acquiring fame, for public acclaim of their nobility or for proving superiority of their scholarship; but their minds...

Ngày tải lên: 26/01/2014, 15:20

... believe /bi'li:v/ tin tưởng belief /bi'li:f/ niềm tin, lòng tin relieve /ri'li:v/ làm nhẹ bớt (đau buồn) /ri'li:f/ cứu trợ relief grievance /'gri:vəns/ l i trách, phàn nàn grievous /'gri:vəs/ đau ... secede /s ’si:d/ phân ly, ly khai kerosene /’kerəsi:n/ dầu hoả, dầu h i Vietnamese /vjetnə’mi:z/ ngư i Việt Nam /kəm’pli t/ hoàn toàn /si:d/ nhường, nhượng Âm “ea” thường phát âm /i: / khi: từ có ... /ti:/ meal /mi:l/ bữa ăn easy / i: z / dễ dàng cheap /t i: p/ rẻ meat /mi:t/ thịt dream /dri:m/ giấc mơ, mơ heat /hi:t/ nóng neat /ni:t/ gọn gàng breathe /bri:ð/ thở, th i nhẹ 10 creature /’kri:t∫ə/...

Ngày tải lên: 27/02/2014, 06:20